EP1264706A2 - Procédé d'impression par transfert - Google Patents

Procédé d'impression par transfert Download PDF

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Publication number
EP1264706A2
EP1264706A2 EP02011821A EP02011821A EP1264706A2 EP 1264706 A2 EP1264706 A2 EP 1264706A2 EP 02011821 A EP02011821 A EP 02011821A EP 02011821 A EP02011821 A EP 02011821A EP 1264706 A2 EP1264706 A2 EP 1264706A2
Authority
EP
European Patent Office
Prior art keywords
composite
printed
article
film
process according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02011821A
Other languages
German (de)
English (en)
Other versions
EP1264706B1 (fr
EP1264706A3 (fr
Inventor
Gilberto Menin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Menphis SpA
Original Assignee
Menphis Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Menphis Srl filed Critical Menphis Srl
Priority to EP06008732A priority Critical patent/EP1685970B1/fr
Publication of EP1264706A2 publication Critical patent/EP1264706A2/fr
Publication of EP1264706A3 publication Critical patent/EP1264706A3/fr
Application granted granted Critical
Publication of EP1264706B1 publication Critical patent/EP1264706B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
    • B41M5/035—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic
    • B41M5/0358—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic characterised by the mechanisms or artifacts to obtain the transfer, e.g. the heating means, the pressure means or the transport means

Definitions

  • the present invnetion relates to a transfer printing process employing a particular composite which can be used in the bag tecnique, as described hereafter, to obtain a drawing reproduction wuth a very good picture definition, very good chromatic yield and substantially defect free, such as bubbles, dots, uncompactness, etc.
  • the colour transfer is made by sublimation and a particular composite film is used comprising a mated polymer film having a metallized surface on which a drawing, preferably coloured, is printed.
  • More in particular said process is applied to flat surfaces and tridimensional articles and is carried out under reduced pressure, optionally by treating the composite, before the printing, with conventional techniques so that the composite results electrostatically charged.
  • the process of the present invention uses a composite comprising a basic polymer film having one or both the surfaces mated, i.e., opaque and rough, wherein a mated surface is metallized and on the metal layer a drawing, preferably coloured, is printed by sublimable inks at the temperatures of the transfer printing process.
  • the transfer printing is a consolidated and diffused printing technique in the industries of this field.
  • the transfer printing shows the following advantages:
  • the drawing is first printed, for example by rotogravure printing, on a suitable support; subsequently the drawing transfer is carried out on the manufactured article, for example by calendering for textiles or by heating in an oven for aluminum profiles or articles of various shapes, at temperatures in the range 170°C -240°C. At said temperatures the transfer step is complited in some minutes.
  • the composite can be used to print flat surfaces or tridimensional articles such as aluminum profiles, doors and windows or others.
  • the so called "membrane” technique can be used, consistsing in coating the article wrapped in the composite in an external membrane. Inside the pocket formed by the membrane, hermetically sealed, vacuum is made.
  • this printing technique of tridimensional articles using the above described composite, printed manufactured articles are obtained having a very good chromatic yield and definition of the transferred drawing.
  • bag Another technique to print tridimensional articles with drawings having sublimable colours is the so called “bag” technique. Said technique is industrially cheaper than the "membrane” technique, since the printing preparation steps are simpler and the whole cycle is carried out in shorter times.
  • the external pocket, which constitutes the bag, is formed in this case by the same composite film. During the printing step the vacuum is kept by connecting the pocket to a vacuum pump.
  • the Applicant has surprisingly and unexpectedly found a process wherein the bag transfer printing technology is used which solves said technical problem.
  • An object of the present invention is a transfer printing process by colour sublimation by means of the bag technology, comprising the following steps:
  • the longitudinal closing of the case formed by the composite can be carried out for example by adhesive tape, or by ultrasound welding, using known techniques.
  • the vacuum is applied to the two ends of the case formed by the composite by a pump.
  • the composite can be treated by conventional techniques so that it results electrostatically charged when used in the process according to the present invention. In this way the adhesion of the composite to the article is easier and therefore the bag formation and the vacuum application is simpler.
  • an oven suitable to this purpose or any other equivalent equipment can be used.
  • the thickness of the polymer compound film is preferably from 10 to 25 micron and the optical density of the aluminum film, determined as above, is preferably from 0.1 to 0.5.
  • the gloss of the rough surface of the polymer film forming the basis composite film is > 10%, measured by the above method, but with contact angle of 60°, still more preferably it ranges from 15%, measured with angle of 60° to 55%, measured with angle of 85°, extremes included.
  • the polymer forming the film or sheet is selected from polyesters, fluorinated resins, polyamides, polyimides, polyethers and polyurethane resins.
  • polyester in particularl polyethylene terephthalate, polybutylene terephthalate, glycol terephthalate is used.
  • polymer films stretched in one or both the directions, longitudinal and/or transversal can be used.
  • the use of the composite of the present invention allows a significant time reduction of the transfer printing process, contemporaneously using lower temperatures and lower times with respect to non metallized mated films.
  • the preparation process of the composite film used in the process of the present invention takes place in two steps.
  • the mated polymer film is prepared.
  • This step can be carried out according to known methods, for example by extrusion of the polymer containing inorganic fillers, or by chemically or mechanically treating, for example by embossing or by applying a resin layer on one or both the film surfaces, or by the "crown" treatment using well known methods to the skilled man in this field.
  • Mated polymer films are easily available both by the plastic compound manufacturers and on the market.
  • the mated films are indeed largely used for the flexible packages.
  • the metallization of the mated surface of the polymer film is carried out by deposition of an aluminum layer under high vacuum conditions, using the usual techniques well known to the skilled man in this field.
  • the film is printed with the drawing to be transferred on the side coated with aluminum, by using offset, flexo, rotogravure, serigraphy printing machines, preferably a rotogravure printing machine is used.
  • the used inks are those usually available on the market and that can be emulsifiable or disperseable in water or in solvent and must preferably be of the type having high resistance to light.
  • the colour transfer on the final support according to the process of the present invention is carried out by the colour sublimation technique at temperatures preferably from 190°C to 210°C.
  • the contact time is generally from 1 minute to 5 minutes, and varies depending on the article mass and on the thermal exchange process conditions during the transfer step.
  • the transferred colour amount is of the order of 90% or higher.
  • the invention films can be used for the transfer printing by applying them to any article to be printed formed by a compound resistant to the temperatures used in the printing process by sublimation and having surfaces capable to absorb the sublimable colours which are transferred from the metallized composite surface.
  • the surfaces of the support to be printed are previously coated, for example by electrostatic painting, with a layer of polymer compound, for example polyester or polyurethane thermosetting powders, formulated so to favour the sublimable ink maximum penenetration.
  • a layer of polymer compound for example polyester or polyurethane thermosetting powders, formulated so to favour the sublimable ink maximum penenetration.
  • the composite films of the present invention can be used for the transfer printing technique for the application to supports formed by different materials, for example metals (aluminum, iron, zinc, steel, cast iron), or glass, ceramic, or polymer compound manufactured articles.
  • metals aluminum, iron, zinc, steel, cast iron
  • glass ceramic, or polymer compound manufactured articles.
  • the materials can have the form of both flat surfaces and tridimensional articles.
  • Another object of the present invention is the composite used in the printing process which has been described above.
  • the receiving support is an aluminum profile for door and windows, having sizes of about 7 meters x 10 cm x 5 cm, pretreated by electrostatic painting with polyester thermosetting powdered paint having a thickness of 75 micron.
  • the composite film is wrapped around the profile, so that folds do not form, and hermetically sealed on the longest side.
  • a vacuum of 0.1 bar (10 4 Pa) is made, taking care that folds or bubbles between the composite and the article do not form.
  • the transfer printing is effected by transferring the wrapping wrapped on the aluminum profile in an oven at 205°C for 4 minutes, keeping the vacuum at the above indicated value by means of the pump.
  • the drawing printed on the aluminum bar (Fig. 1) shows printing defects attributable to air bubbles or non evacuated vapors, which have prevented the film from contacting the paint layer on the profile. Besides, some particulars of the printed grains result blurred. Therefore the reproduction of the printed drawing is not good. It is observed that on the used composite only traces of the sublimable inks remain. Therefore the colour transfer on the aluminum bar has been substantially quantitative.
  • Example 1 is repeated but by using a composite film in which one of the basis film surfaces is mated and then it has been metallized with aluminum.
  • the mated surface has a gloss of 45% determined by the DIN 67530 method, by using a measurement angle of 85°.
  • Example 2 is repeated but by using only the mated basis polymer film (not metallized with the aluminum layer) on which the same colour drawing is printed.
  • Example 1 One proceeds as in Example 1 but by using a composite film wherein one of the basic film surfaces is mated and has then been metallized with aluminum.
  • the mated surface has a 20% gloss, determined by the DIN 67530 method, by using a measurement angle of 60°.

Landscapes

  • Decoration By Transfer Pictures (AREA)
  • Printing Methods (AREA)
  • Laminated Bodies (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Non-Metallic Protective Coatings For Printed Circuits (AREA)
EP02011821A 2001-06-07 2002-05-28 Procédé d'impression par transfert Expired - Lifetime EP1264706B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06008732A EP1685970B1 (fr) 2001-06-07 2002-05-28 Feuille composite pour un procédé d'impression par transfert

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001MI001198A ITMI20011198A1 (it) 2001-06-07 2001-06-07 Processo di stampa transfer
ITMI20011198 2001-06-07

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP06008732A Division EP1685970B1 (fr) 2001-06-07 2002-05-28 Feuille composite pour un procédé d'impression par transfert

Publications (3)

Publication Number Publication Date
EP1264706A2 true EP1264706A2 (fr) 2002-12-11
EP1264706A3 EP1264706A3 (fr) 2004-06-16
EP1264706B1 EP1264706B1 (fr) 2006-07-19

Family

ID=11447822

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02011821A Expired - Lifetime EP1264706B1 (fr) 2001-06-07 2002-05-28 Procédé d'impression par transfert
EP06008732A Expired - Lifetime EP1685970B1 (fr) 2001-06-07 2002-05-28 Feuille composite pour un procédé d'impression par transfert

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP06008732A Expired - Lifetime EP1685970B1 (fr) 2001-06-07 2002-05-28 Feuille composite pour un procédé d'impression par transfert

Country Status (5)

Country Link
EP (2) EP1264706B1 (fr)
AT (1) ATE333376T1 (fr)
DE (1) DE60213162D1 (fr)
ES (2) ES2310872T3 (fr)
IT (1) ITMI20011198A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20130226A1 (it) * 2013-02-19 2014-08-20 Menphis S P A Film per la decorazione a trasferimento di colore e relativi processi di produzione e decorazione
EP3006220A1 (fr) * 2010-08-19 2016-04-13 Redbox Technology Limited Procédé d'impression par transfert thermique utilisant un support pour transférer métallisé

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106891630A (zh) * 2017-03-17 2017-06-27 蔡健聪 一种高仿真高效率铝板生产加工工艺
KR102633961B1 (ko) * 2017-10-10 2024-02-06 도레이 카부시키가이샤 필름

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1296823B1 (it) 1997-12-02 1999-08-02 Memphis S R L Processo di stampa transfer
IT1305612B1 (it) * 1998-04-30 2001-05-09 Giovanni Bortolato Macchina e procedimento per trasferire mediante sublimazionerappresentazioni grafiche su di un oggetto
IT1313671B1 (it) * 1999-10-14 2002-09-09 Menphis S R L Film per stampa transfer.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3006220A1 (fr) * 2010-08-19 2016-04-13 Redbox Technology Limited Procédé d'impression par transfert thermique utilisant un support pour transférer métallisé
ITMI20130226A1 (it) * 2013-02-19 2014-08-20 Menphis S P A Film per la decorazione a trasferimento di colore e relativi processi di produzione e decorazione

Also Published As

Publication number Publication date
EP1264706B1 (fr) 2006-07-19
EP1685970A1 (fr) 2006-08-02
ES2265004T3 (es) 2007-02-01
ITMI20011198A1 (it) 2002-12-07
ES2310872T3 (es) 2009-01-16
EP1264706A3 (fr) 2004-06-16
ITMI20011198A0 (it) 2001-06-07
ATE333376T1 (de) 2006-08-15
EP1685970B1 (fr) 2008-08-20
DE60213162D1 (de) 2006-08-31

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